https://science.nasa.gov/3d-resources/active-cavity-irradiance-monitor-satellite-acrimsat-a/
Active Cavity Irradiance Monitor Satellite (AcrimSAT) (A) - NASA Science
Jun 11, 2025 - ACRIMSAT studies the sun's energy output with uniform sensitivity to improve knowledge of the sun's role in global change.
activecavityirradiancemonitorsatellite